Billing Meter aggregation is the technique of assigning all meters within a service polygon to a specified demand node (see Figure below). Service polygons define the service area for each of the demand nodes.

Meter Aggregation is a polygon-to-point allocation technique, because the service areas are contained in a GIS polygon layer, while again, the demand nodes are contained in a point layer. The demands associated with the meters within each of the service area polygons is assigned to the respective demand node points.

Due to the need for service polygons, the initial setup for this approach is more involved than the meter assignment strategy, the trade-off being greater control over the assignment of meters to demand nodes. Automated construction of the service polygons may not produce the desired results, so it may be necessary to manually adjust the polygon boundaries, especially at the edges of the drawing.